Are Fischer–Tropsch waxes good feedstocks for fluid catalytic cracking units?
Are Fischer–Tropsch waxes good feedstocks for fluid catalytic cracking units?
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费托蜡是流化催化裂化装置的良好原料吗？
DOI：
10.1016/j.cattod.2005.07.148
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发表时间：
2005
期刊：
影响因子：
5.3
通讯作者：
J. Moulijn
中科院分区：
文献类型：
--
作者：
X. Dupain;R. Krul;M. Makkee;J. Moulijn
高石蜡费托合成 (FTS) 蜡作为流化催化裂化 (FCC) 原料的潜力已得到评估。使用直流式微型提升管反应器来模拟实际的 FCC 条件。 FTS 蜡确实是对 FCC 有吸引力的原料。由于其高石蜡度，通过调整工艺条件和催化剂配方可以获得一系列有趣的产品。可获得高汽油馏分（70wt%），具有明显的高质量马达辛烷值。预计柴油也会相对较好。由于原料中不含硫和氮，因此可以获得极其清洁的运输燃料，而且芳烃含量也很低。平衡催化剂与蒸汽失活的 ZSM-5 添加剂的组合可产生大量丙烯 (16wt%)、异丁烯 (7wt%) 和 n-C4-烯烃 (8wt%)。
The potential of a highly paraffinic Fischer–Tropsch synthesis (FTS) wax as a feedstock for Fluid Catalytic Cracking (FCC) has been evaluated. A once-through microriser reactor was used to mimic realistic FCC conditions. FTS waxes are indeed attractive feedstocks for FCC. As a result of its high paraffinicity an interesting spectrum of products can be obtained by tuning process conditions and catalyst formulations. A high gasoline fraction (70wt%) with an apparent high-quality motor octane number can be obtained. Also a relatively good diesel is expected. Due to the absence of sulfur and nitrogen in the feed extremely clean transportation fuels can be obtained that are additionally low on aromatics. The combination of an equilibrium catalyst with a steam-deactivated ZSM-5 additive yields high amounts of propene (16wt%), isobutene (7wt%) and n-C4-olefins (8wt%).